4′-[4-（3吡-啶基）苯基]-2,2′：6′,2″联三吡啶及其金属配合物的光谱

合成了多齿配体4′-4-（3吡-啶基）苯基]-2,2′：6′,2″-联三吡啶（L）,研究了L与过渡金属（Zn^2＋,Cu^2＋,Co^2＋）形成配合物的紫外可见光谱和荧光发射光谱。结果表明：在95%乙醇溶液中,L的最大吸收峰位于295nm,形成配合物后,在330nm附近出现了新的吸收峰;与L相比,Zn^2＋使L的荧光增强并红移,而Cu^2＋和Co^2＋能够完全猝灭L的荧光。由此可见,L不仅能够与金属离子构建组装体,也可以作为具有潜在应用价值的荧光材料。

Spectra of 4′-[4-(3-Pyridyl)Phenyl]-2,2′ : 6′, 2″-Terpyridine and Its Metal Complexes

Multitopic ligand, 4＇-4- （3-pyridy）phenyl]-2,2′ ： 6′, 2″ -terpyridine（L） was prepared. The UV-visible absorption and the fluorescence emission spectra of ligand L with transition metals （Zn^2＋ ,Cu^2＋ and Co^2＋） were investigated. The results indicated that the absorption peak of ligand L lie at 295nm in 95% ethanol solution and a new peak of the metal complexes appeard at 330nm. Compared with L,an enhancement in fluorescence was detected upon the addition of Zn^2＋ in ethanol solution and a distinct red shift was observed. However,its fluorescence was efficiently quenched by the addition of Cu^2＋ and Co^2＋,respectively. As a result, the multitopic ligand of L could not only act as linkers for the metal-directed building blocks,but also act as potential flourescent materials.